Hamilton tech help!!!

[TinyPatFish]

I have 2 dome MH light fixtures. The bulb in it says hamilton tech true 10,000 k MH 175 w/u 127. Can anyone tell me what the w/u means and the 127? Im pretty sure the w means watts. But idk the u. Also does anyone know what the are worth? I couldnt really find anything online that looked like them. Please if anyone knows or has experience with them please reply.

 

[ccCapt]

The 175w is 175 watt and the u127 means the glass is a uv127 ultraviolet radiation filter.

Hamilton Metal Halide Lighting HQI Pendants Hanging Light
Aquatic Eco-Systems: Aquarium Supplies - Hamilton Metal Halide Pendants

 

[TinyPatFish]

Thank you for the link now i know all about it. I feel like a dumb dumb calling it a dome and not a pendant